tc7107a Microchip Technology Inc., tc7107a Datasheet - Page 21

• Manufacturer Part Number: tc7107a
• Description: 3-1/2 Digit Analog-to-digital Converters
• Manufacturer: Microchip Technology Inc.

FIGURE 10-7:
Range and Over Range Signals from TC7106A
Outputs
FIGURE 10-8:
Recommended Component Values for 2.00V Full
Scale
© 2006 Microchip Technology Inc.
TC7106A
TC7107A
O/R
U/R
CD4023
OR 74C10
To Pin 1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
To Logic
0.047μF
0.22μF
V
To Display
CC
V+
Circuit for Developing Under
0.1μF
TC7106/TC7107:
CD4077
100kΩ
100pF
25kΩ
470kΩ
O/R = Over Range
U/R = Under Range
1
20
Set V
TC7106A
0.01μF
REF
1MΩ
24kΩ
= 1V
40
21
To Logic
V
V-
+
–
CC
IN
V+
V-
FIGURE 10-9:
Single +5V Supply
TC7107A
TC7106/A/TC7107/A
Note: An external reference must be used in this application.
To PIn 1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
0.22μF
0.47μF
To Display
0.1µF
TC7107 Operated from
100kΩ
100pF
1kΩ
47kΩ
0.01μF
Set V
1.2V
10kΩ
REF
DS21455C-page 21
= 100mV
1MΩ
10kΩ
–
IN
V+